body, h1, h2, h3, h4, h5, h6, hr, p, blockquote, dl, dt, dd, ul, ol, li, pre, form, fieldset, legend, button, input, textarea, th, td { margin:0; padding:0; }  
    body, button, input, select, textarea { font:tahoma, arial, \5b8b\4f53; }  
    h1, h2, h3, h4, h5, h6{ font-size:100%; }  
    address, cite, dfn, em, var,i { font-style:normal; }  
    code, kbd, pre, samp { font-family:couriernew, courier, monospace; }  
    small{ font-size:12px; }  
    ul, ol { list-style:none; }  
    a { text-decoration:none; }  
    a:hover { text-decoration:none; }  
    sup { vertical-align:text-top; }  
    sub{ vertical-align:text-bottom; }  
    legend { color:#000; }  
    fieldset, img { border:0; }  
    button, input, select, textarea { font-size:100%; }
body,html{font-weight: normal;font-size: 16px;}
body,html{
    padding-bottom: constant(safe-area-inset-bottom);
    padding-bottom: env(safe-area-inset-bottom);
    height: 100%;
    color: #333;
}
body  {
  font-family: Arial, "Microsoft Yahei", "Helvetica Neue", Helvetica, sans-serif;
     -webkit-text-size-adjust: none;   background-color: #f2f2f2;
}